You know a new bird-watching book is a good one — in this case, “Bird Watcher’s Bible,” (National Geographic, $40) edited by longtime bird artist Jonathan Alderfer — when you mention it to a fellow bird-watcher co-worker, and he immediately drops what he’s doing, races over to your office, and the two of you spend some guilty-pleasure moments flipping through the book, exclaiming out loud at the photos and calling out birds you’ve both recently seen.

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